A secure annuli CAPTCHA systemOpen Website

Jie Zhang, Min-Yen Tsai, Kotcharat Kitchat, Min-Te Sun, Kazuya Sakai, Wei-Shinn Ku, Thattapon Surasak, Tipajin Thaipisutikul

Published: 01 Jan 2023, Last Modified: 08 Nov 2023Comput. Secur. 2023Readers: Everyone
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